① ②当 时,
组别 |
|
|
|
|
|
|
男 | 2 | 3 | 5 | 15 | 18 | 12 |
女 | 0 | 5 | 10 | 10 | 7 | 13 |
附:
| 0.10 | 0.05 | 0.010 | 0.005 | 0.001 |
k | 2.706 | 3.841 | 6.635 | 7.879 | 10.828 |
.
① ,② ,③ ;